/Engine/Source/Editor/UnrealEd/Public/Kismet2/CompilerResultsLog.h
Update the pin source backtrack map to note that NewPin was most closely generated/caused by the SourcePin
void NotifyIntermediatePinCreation ( [UEdGraphPin](API\Runtime\Engine\EdGraph\UEdGraphPin) * NewPin, [UEdGraphPin](API\Runtime\Engine\EdGraph\UEdGraphPin) * SourcePin )